Align helmdiff_check behavior with the deploy function (#670)

Align `helmdiff_check` behavior with the `deploy` function

SUMMARY
Align helmdiff_check behavior with the deploy function

Fixes #638
helmdiff_check respects set_values parameter
Fixes #669
helmdiff_check command line parameters sequence aligned to the deploy function

ISSUE TYPE

Bugfix Pull Request

COMPONENT NAME
kubernetes.core.helm

Reviewed-by: Mike Graves <mgraves@redhat.com>

changelogs/fragments/20240117-fix-helm-diff-cmd-line-rendering.yml

@@ -0,0 +1,4 @@
+---
+bugfixes:
+  - align `helmdiff_check()` function commandline rendering with the `deploy()` function (https://github.com/ansible-collections/kubernetes.core/pull/670).
+  - integrations test helm_kubeconfig - set helm version to v3.10.3 to avoid incompatability with new bitnami charts (https://github.com/ansible-collections/kubernetes.core/pull/670).

plugins/modules/helm.py

@@ -639,6 +639,7 @@ def helmdiff_check(
     replace=False,
     chart_repo_url=None,
     post_renderer=False,
+    set_value_args=None,
 ):
     """
     Use helm diff to determine if a release would change by upgrading a chart.
@@ -656,16 +657,19 @@ def helmdiff_check(
     if post_renderer:
         cmd += " --post-renderer=" + post_renderer
 
+    if values_files:
+        for value_file in values_files:
+            cmd += " --values=" + value_file
+
     if release_values != {}:
         fd, path = tempfile.mkstemp(suffix=".yml")
         with open(path, "w") as yaml_file:
             yaml.dump(release_values, yaml_file, default_flow_style=False)
         cmd += " -f=" + path
         module.add_cleanup_file(path)
 
-    if values_files:
-        for values_file in values_files:
-            cmd += " -f=" + values_file
+    if set_value_args:
+        cmd += " " + set_value_args
 
     rc, out, err = module.run_helm_command(cmd)
     return (len(out.strip()) > 0, out.strip())
@@ -847,11 +851,11 @@ def main():
                     "Please consider add dependencies block or disable dependency_update to remove this warning."
                 )
 
-        if release_status is None:  # Not installed
-            set_value_args = None
-            if set_values:
-                set_value_args = module.get_helm_set_values_args(set_values)
+        set_value_args = None
+        if set_values:
+            set_value_args = module.get_helm_set_values_args(set_values)
 
+        if release_status is None:  # Not installed
             helm_cmd = deploy(
                 module,
                 helm_cmd,
@@ -896,6 +900,7 @@ def main():
                     replace,
                     chart_repo_url,
                     post_renderer,
+                    set_value_args,
                 )
                 if would_change and module._diff:
                     opt_result["diff"] = {"prepared": prepared}
@@ -909,10 +914,6 @@ def main():
                 )
 
             if force or would_change:
-                set_value_args = None
-                if set_values:
-                    set_value_args = module.get_helm_set_values_args(set_values)
-
                 helm_cmd = deploy(
                     module,
                     helm_cmd,

tests/integration/targets/helm_diff/tasks/main.yml

@@ -143,6 +143,8 @@
         chart_ref: "{{ test_chart_ref }}"
         values:
           foo: gaz
+        values_files:
+          - "{{ test_chart_ref }}/values.yml"
       register: install
 
     - assert:
@@ -157,6 +159,46 @@
         chart_ref: "{{ test_chart_ref }}"
         values:
           foo: gaz
+        values_files:
+          - "{{ test_chart_ref }}/values.yml"
+      register: install
+
+    - assert:
+        that:
+          - install is not changed
+
+    - name: Upgrade with set_values
+      helm:
+        binary_path: "{{ helm_binary }}"
+        name: test-chart
+        namespace: "{{ helm_namespace }}"
+        chart_ref: "{{ test_chart_ref }}"
+        values:
+          foo: gaz
+        values_files:
+          - "{{ test_chart_ref }}/values.yml"
+        set_values:
+          - value: foo=qux
+            value_type: string
+      register: install
+
+    - assert:
+        that:
+          - install is changed
+
+    - name: Upgrade with set_values idempotency check
+      helm:
+        binary_path: "{{ helm_binary }}"
+        name: test-chart
+        namespace: "{{ helm_namespace }}"
+        chart_ref: "{{ test_chart_ref }}"
+        values:
+          foo: gaz
+        values_files:
+          - "{{ test_chart_ref }}/values.yml"
+        set_values:
+          - value: foo=qux
+            value_type: string
       register: install
 
     - assert:

tests/integration/targets/helm_kubeconfig/tasks/main.yml

@@ -1,19 +1,21 @@
 ---
 - name: Test helm with in-memory kubeconfig
   include_tasks: "from_in_memory_kubeconfig.yml"
+  loop_control:
+    loop_var: test_helm_version
+  with_items:
+    - "v3.10.3"
 
 - name: Test helm with custom kubeconfig and validate_certs=false
   include_tasks: "from_kubeconfig_with_validate_certs.yml"
   loop_control:
     loop_var: test_helm_version
   with_items:
     - "v3.10.3"
-    - "v3.8.2"
 
 - name: Test helm with custom kubeconfig and ca_cert
   include_tasks: "from_kubeconfig_with_cacert.yml"
   loop_control:
     loop_var: test_helm_version
   with_items:
-    - "v3.5.1"
-    - "v3.4.2"
+    - "v3.10.3"